How do I reset my ac code 2002 cadillac seville sls

https://www.google.com/search?sa=X&source=univ&tbm=isch&q=2002+cadillac+seville+sls+engine+diagram&hl=en&ved=2ahUKEwi2hrmDsKfpAhUOfBoKHR5FDnMQsAR6BAgJEAE&biw=1326&bih=627

https://my.cadillac.com/content/dam/gmownercenter/gmna/dynamic/manuals/2002/cadillac/seville/2002_cadillac_seville_owners.pdf

It is likely the radio has failed, a GM dealer can confirm this and have it repaired for you.

When I purchased my brand new 2002 Cadillac SLS Seville, I had a problem with the ideling and also the car would lurch forward every time I put it in drive. I had the dealer replace the idiling chip and it fixed my idleing and lurching problem. You could try this and see if it fixes your problem, or check for recalls with this problem.

If your car stalls while ideling - then check the crank sensor.

It is also good if you purchase a scanner and check which codes are registered by the on-board computer and this could save you some money trying to determine the problem.

Hope this helps.

its not programmable.
the modes are controls by dampers, those are controlled by the dash controller, HVAC.
the FSM cover these tests. so does ALLDATA.com
IN CHAPTER HVAC.
its lots of pages, i cant post them.
check all fuses
does blower work on high ,
is only one vent bad? or all vents dead.??
are all modes dead.? (direction, and recirc?)

If it is the north star the water pump is on the right side of the motor if I'm not mistaking the new one should come with a pulley on it if not it should just unbolt.

you will need a new one programed for it

Your title says Deville but your question is about the SLS (Seville). If you are asking about the Seville (4.6L V8) with the Key on and the engine off you should have 41-47psi.

it could be that your low on power sterring fluid

Sorry, there is no way after 1998 that you can access the obd2 system from the dash buttons, only
with the use of the appropriate scan tool.

1996 cadillac sls. Oil light comes on and car stalls. Oil is full